KP2743-1-75F-B25 - Lincoln Magnum PRO 550A Flush MIG Nozzle 3/4 Inch Thread-On (25 Pack)

Heavy-Duty Consumables for Professional Fabricators

Maximize the performance of your welding operations with the Lincoln Electric KP2743-1-75F-B25 Magnum PRO Nozzle. Built for the serious welder, this nozzle is rated for 550 amps, providing the thermal endurance necessary for high-power MIG and flux-cored welding applications. When you are pushing your machine to the limit on thick plate or multi-pass joints, you need a nozzle that won't deform or overheat. The Magnum PRO series is renowned for its durability, and this nozzle is no exception, offering superior resistance to heat and wear compared to standard consumer-grade parts.

This specific model features a flush tip geometry and a wide 3/4 inch (19 mm) bore. The flush design is a favorite among operators who need a clear view of the weld puddle without sacrificing gas coverage. It sits level with the contact tip, providing a consistent reference point for maintaining the correct contact-tip-to-work distance (CTWD). The 19mm opening is particularly beneficial when using larger diameter wires or when welding at higher travel speeds, as it ensures a broad umbrella of shielding gas covers the entire solidification zone, preventing defects like porosity.

The thread-on design of the KP2743-1-75F offers significant operational benefits. It ensures a solid connection to the diffuser, which not only keeps the nozzle physically secure but also aids in heat dissipation. A loose nozzle can lead to poor gas coverage and overheating, but the threaded fit of the Magnum PRO line eliminates these variables. Furthermore, the heavy-wall construction stands up to the mechanical abuse of daily shop life, including the frequent cleaning required to remove spatter. The smooth surface finish helps minimize spatter buildup, keeping the gas path clear for longer periods.

Offered in a convenient 25-pack, this product is an excellent value for welding shops and industrial sites. Buying in bulk ensures that you always have a fresh nozzle on hand when you need it, minimizing downtime and keeping your arc on time. Whether you are repairing heavy machinery or fabricating structural components, the reliability of your consumables directly impacts your bottom line. Trust in the quality of Lincoln Electric to keep your Magnum PRO guns running smoothly with these high-performance, flush thread-on nozzles.